Around half of China fell under Japanese control as the war dragged on, but the mountainous areas of central and Northern China defeated the best of Japanese efforts. The Kuomintang did not do a thing, despite American intervention and assistence. Tibet, then a dictatorship ruled by a buddhist theocracy, refused to help China. When the war ended in 1945, China was given Taiwan and Manchuria for its efforts. Four years later, they lost Taiwan to the Kuomintang, the same people who had all but helped the Japanese conquer China by attacking the resistance forces.